import java.io.*;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

/**
 * @Author: WangYongGan
 * @Date: 2021/11/11 18:44
 * @Description:
 */
public class PathsAndFiles {
    public static void main(String[] args) throws FileNotFoundException {
        String name = "aaa";
        List<Object>list=new ArrayList<>();
        list.add(name);
        String s = (String) list.get(0);
        s+="v";
        System.out.println(name);

    }
}
